William t



To all whom t may concern; y

Be it known `that I`,1WILI`.IAM T. Voss, of Newtonville, in thecountyof Middlesex and State of lMassachusetts,have invented a new i and useful Improvementin" Pumps for Ele- ,vating Fluids; andI` do hereby declare the ings, letters, figures, and references thereof. `Of saiddrawings Figure `l `denotes a side view of one of-myimproved double pumps. Fig. 2, isa rearelevatio-n of the same. Fig.

" F 3, is a transverse and vertical section of it, the same` beingltaken through both its bar# pipes, being shown as y, `lfor containing a fluid.` F `The natur-eef myfinvention .consists in :a peculiar manner of connecting twopump barrels, and arranging `their induction and ""eduction pipes "or passages and the valves of their respective pistons whereby two applied to a reservoir necessary to the elevation of water by means fof two pump barrels. i f

` y For the purpose offcarrying out my invention two pump `barrels A, and B, are employed, theybeing arranged side by side and Aso connected together at two of their adjacentends by an `arched pipe, C, that `there may be a free communication between the bores of both. Each of the .other two ends of the said barrels is provided with a i w "pipe (D, or,` E,) leading from it,one of such pipes being theinduction and the othen i the eduction pipe.` p p i "In the1 drawings, the induction pipe is seen as leading `from thelower part of vthe "barrel, A, while theeduction pipewis repre- `sentedwas passingfromithe lower end of the pump barrel, B, and bent upward and madeto openand terminate over the reservoir, so as to` discharge directly into it. `Each lof `the ubarrelfs,` A, B, is provided with a piston, `H, or, the rods of which i respectively play through two stuffing 1 boxes, a, b, arranged inthe connection pipe, C. These `rods areconnected together by .p `a `cross bar 'or head,fe," which is jointed to a brake or pump handle, K, whose fulcrum,

f,is at thetop of 'al movable or vibratory rod` or standard, L, `which atrits foot is jointed to the `base plate, M,by which the "pump barrels and their reservoir aresupe "same to be fully `described in the `following specification and theaccompanying-draws rels and pistons, the said pump for the sake 4 "of illustrating its induction and eduction"` l wahres in or on the pistons are all that isV yreservoir, `F, to the lowerend of the pump f PUMP. A

"Specication of lIl'ietters lgfatent No. 12,566, dated AMardi 20, 1855;

ported. Each piston `is 'provided with one ormore passages, h, leading through it, and

'each provided with a valve as seen at N, or,

O, the valve of one piston beingplaced on one side or the top of it, while that of the z otherplston is disposedon the `other side or the bottom of it as seen in Figp. `This `arrangement of the` valves with respect "to their pistons constitutes an important fea` ture of my invention'.

A pumpmbelng' so constructed, the `two pistons. are moved simultaneously in. the `same direction when the Lbrake is in operation. `While the two pistons are being either raised or depressed the valve of one will `be closed and that of the other opened. When they are raised, the valve of that belonging to the barrel, A, is closed, and the air or fluid over the two pistons will be drawn down throughthat of the barrel, B, water for fluid at the same time always passingup into the barrel, A, or space belo-w its piston. During the descent of the pistonthe space over them and in the barrels 4"will be increased so as to cause the valve of the piston of the barrel, A, to open, and the Water to flow or be drawn into such space, the water that was in the other barrel and below its piston being drawn'out thereof and through the induction pipe. Thus at each upward or downward stroke of thepiston, the water o-r fluid will be elevated by atmospheric pressure and forced out of the pump by pressure of one of the pistons.

,In this pump, only two valves or sets of valves, are necessary, while in most if not all other pumps, which have two barrels and two pistons, four valves or sets of valves are necessary. A great reduction of friction in the passage ofthe fluid through the valve openings compared with what occurs in other pumps, as above mentioned, naturally results the same not only reducing the power required to operate the pistons, but also contributing to increase the flow and delivery of the fluid or the amount of it elevated. Y

`The simplicity of my improvedpump is also another advantageit possesses.` Asit has but two sets of valvesit is not liable to get out of order as it would' be had it four sets. Y

What` I claim consists in connecting the two pump barrels at two adjacent ends as described, in combination with not only arranging the valves of their respective pistons so that one of them shall be applied to one o1' the upper side of one piston, While the other is applied to' the opposite or lower side of the other piston as stated, but applying the eduotion and induction pipes respectively to the disconnected ends of the barrels substantially as hereinbefore spec- In testimony whereof I have hereunto set my signature this fth day of January, 10 A. D. 185.5.

WILLIAM T. VOSE.

Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

